So i ended up adding a snippet of code to allow Battleground and Arena ques to play a sound when they pop.

Code:

function events:UPDATE_BATTLEFIELD_STATUS(...)
local status, mapName, instanceID
for i=1,GetMaxBattlefieldID() do
status, mapName, instanceID = GetBattlefieldStatus(i)
if status == "confirm" then
PlaySoundFile("Interface\\AddOns\\Wake_up\\sound\\wake_up.mp3", "Master")
break
end
end
end